CN108206259B - Liquid battery connection module and battery device - Google Patents

Abstract

A liquid battery connection module and a battery device are provided, the battery device comprises a battery box and a liquid battery connection module. The liquid battery connecting module comprises a circuit substrate, a plurality of confluence connecting pieces and a sealing cover mechanism. The confluence connecting pieces are arranged on the bottom surface of the circuit substrate in two rows at intervals. Each bus connecting piece is provided with a main body part connected with the circuit substrate and at least two electrode connecting parts. The capping mechanism is disposed on a bottom surface of the circuit substrate and includes a plurality of sealing units. Each sealing unit comprises a cover body, two first sealing pieces and a second sealing piece. The cover body is provided with two openings which are respectively sleeved on two electrode connecting parts which are respectively positioned in the two rows of confluence connecting pieces and correspond to the positions, and the two first sealing pieces are respectively positioned at the two openings and liquid-tightly seal the gap between the cover body and the corresponding electrode connecting parts. The second seal is located at the corresponding compartment and liquid-tightly closes the gap between the cover and the box.

Description

Liquid battery connection module and battery device

technical field

The invention relates to a liquid battery connection module, in particular to a liquid battery connection module and a battery device for electrically connecting and sealing a plurality of liquid battery cells.

Background technique

At present, a common battery device (battery) composed of a plurality of battery cells (cells), most of which use solid-state battery blocks, such as US Patent Publication No. US 2014/0127551 A1, US Patent Publication No. US Disclosed by No. 2014/0356668 A1.

Since the structure of a solid-state battery block is quite different from that of a liquid battery unit, a battery device composed of a plurality of solid-state battery blocks, compared with a battery device composed of a plurality of liquid battery cells, has an overall assembly structure of the two. And the design requirements of the electrode connection structure must be different. However, the patents disclosed above are mostly used for the assembly technology of solid-state battery blocks, and there is still room for development on how to make the assembly of liquid battery cells more convenient and have better sealing effect.

SUMMARY OF THE INVENTION

Therefore, one of the objectives of the present invention is to provide a liquid battery connection module for sealing a plurality of liquid battery cells and connecting electrodes of the plurality of battery cells in series.

Therefore, another object of the present invention is to provide a battery device with a plurality of liquid battery cells and a well-sealed battery device.

Therefore, in some embodiments, the liquid battery connection module of the present invention includes a circuit substrate, a plurality of bus connectors and a cover mechanism. The circuit substrate extends along a first direction and is provided with circuit traces. The plurality of bus connectors are arranged on the bottom surface of the circuit substrate in two separated rows and are electrically connected to the circuit traces, and each row is arranged along the first direction, and each bus connector has a connection to the circuit substrate. The main body part and at least two electrode connecting parts. The capping mechanism is arranged on the bottom surface of the circuit substrate, and includes a plurality of sealing units arranged along the first direction. Each sealing unit includes a cover body, two first sealing members and a second sealing member. The cover The body extends along a second direction perpendicular to the first direction and has two openings arranged along the second direction. The electrode connecting parts corresponding to the positions in the direction, the two first sealing members are respectively located at the two openings and are interposed between the cover body and the corresponding electrode connecting parts to liquid-tightly seal the cover body and the corresponding electrode connection. the gap between the parts, the second seal is arranged on the outer circumference of the cover body.

In some implementation forms, each electrode connecting portion of each bus connector protrudes from the main body portion in a direction away from the bottom surface of the circuit substrate and is in the shape of a bump.

In some embodiments, each first sealing member of each sealing unit is in the form of a gasket and is sleeved on the outer periphery of the corresponding electrode connecting portion.

In some embodiments, the cover body of each sealing unit further has a base connected to the circuit substrate and a plug protruding from the base and having an outer circumference retracted inward from the base, and the plurality of openings penetrate through the base. the base and the plug.

In some embodiments, the second sealing member of each sealing unit is in the form of a gasket and is sleeved on the outer periphery of the plug portion.

In some embodiments, the cover of each sealing unit further has a plurality of fixing posts, and the circuit substrate and the plurality of bus connectors each have corresponding fixing holes for the corresponding fixing posts to pass through and be fixed.

In some implementation forms, each bus connector has two fixing holes, and the fixing columns of the cover body of each sealing unit are two, and they are respectively located at two diagonal corners of the cover body, so as to pass through the cover body respectively. Each of the two rows has a fixing hole of the bus connecting piece, and the two fixing holes of each bus connecting piece are respectively penetrated by one of the respective fixing columns of the two adjacent cover bodies.

In some implementation forms, the plurality of fixing posts are fixedly buckled in the corresponding fixing holes by means of heat fusion.

In some implementation forms, the covers of the plurality of sealing units are separated from each other and independently provided on the circuit substrate.

In some implementation forms, the circuit traces of the circuit substrate are arranged on the bottom surface of the circuit substrate, and the main bodies of the plurality of bus connectors are welded to the circuit traces.

Therefore, in some embodiments, the battery device of the present invention includes a battery box and a liquid battery connection module. The battery box has a box body and a plurality of battery cells, the box body has a plurality of partition walls arranged at intervals along a first direction to define a plurality of compartments, and the plurality of battery cells are respectively arranged in the In the plurality of compartments, each battery cell includes battery fluid and battery electrodes. The liquid battery connection module includes a circuit substrate, a plurality of bus connections and a cover mechanism. The circuit substrate extends along the first direction and is provided with circuit traces. The plurality of bus connectors are arranged on the bottom surface of the circuit substrate in two separated rows and are electrically connected to the circuit traces, and each row is arranged along the first direction, and each bus connector has a connection to the circuit substrate. The main body part and at least two electrode connection parts are connected to the battery electrodes in different compartments respectively, so as to connect the battery electrodes in the plurality of compartments in series. The capping mechanism is arranged on the bottom surface of the circuit substrate, and includes a plurality of sealing units arranged along the first direction, and the plurality of sealing units correspond to the plurality of compartments respectively, and each sealing unit includes a cover body , two first seals and a second seal, the cover extends along a second direction perpendicular to the first direction and has two openings arranged along the second direction, the two openings are respectively set The two first sealing members are respectively located at the two openings and are connected to the corresponding electrodes between the cover body and the two electrode connecting parts respectively located in the two rows of bus connecting parts and corresponding to the position in the second direction. The gap between the cover body and the corresponding electrode connecting part is liquid-tightly closed between the parts, and the second seal is located at the corresponding compartment and is liquid-tightly closed between the cover body and the box body. The gap between the cover body and the box body.

In some implementation forms, each electrode connecting portion of each bus connector protrudes from the main body portion in a direction away from the bottom surface of the circuit substrate and is in the shape of a bump.

In some embodiments, each first sealing member of each sealing unit is in the form of a gasket and is sleeved on the outer periphery of the corresponding electrode connecting portion.

In some embodiments, the cover body of each sealing unit further has a base connected to the circuit substrate and a plug protruding from the base and having an outer circumference retracted inward from the base, and the plurality of openings penetrate through the base. the base and the plug.

In some embodiments, the second sealing member of each sealing unit is in the form of a gasket and is sleeved on the outer periphery of the plug portion.

In some embodiments, the plug portion has two side protruding ribs extending along the second direction and located on opposite sides of each other and protruding toward the corresponding compartment, and each side protruding rib forms a side protruding rib extending along the second direction And adjacent to the buckle groove of the base, the top of each partition wall is formed with two buckle edges respectively protruding toward the adjacent compartment, so as to extend into the corresponding buckle groove and be clamped by the corresponding side protruding ribs.

In some implementation forms, each side protruding rib further forms a locking groove spaced from the buckle groove and farther from the base than the buckle groove and for the second sealing member to be clamped.

In some embodiments, the cover of each sealing unit further has a plurality of fixing posts, and the circuit substrate and the plurality of bus connectors each have corresponding fixing holes for the corresponding fixing posts to pass through and be fixed.

In some implementation forms, each bus connector has two fixing holes, and the fixing columns of the cover body of each sealing unit are two, and they are respectively located at two diagonal corners of the cover body, so as to pass through the cover body respectively. Each of the two rows has a fixing hole of the bus connecting piece, and the two fixing holes of each bus connecting piece are respectively penetrated by one of the respective fixing columns of the two adjacent cover bodies.

In some implementation forms, the plurality of fixing posts are fixedly buckled in the corresponding fixing holes by means of heat fusion.

In some embodiments, the cover of each sealing unit forms a first liquid injection hole that can communicate with the corresponding compartment, and the circuit substrate forms a plurality of second liquid injection holes corresponding to the plurality of first liquid injection holes of the plurality of sealing units respectively. Injection hole.

In some implementation forms, the covers of the plurality of sealing units are separated from each other and independently provided on the circuit substrate.

In some implementation forms, the circuit traces of the circuit substrate are arranged on the bottom surface of the circuit substrate, and the main bodies of the plurality of bus connectors are welded to the circuit traces.

The present invention has at least the following effects: the liquid battery connection module can be pre-assembled in a modular manner, and the bus connector and the capping mechanism are integrated on the circuit substrate, so that the assembly procedure with the battery box is simpler and easier to operate, and can It does seal the battery fluid and can electrically connect multiple battery electrodes in the battery box.

Description of drawings

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein:

FIG. 1 is a perspective view of an embodiment of a battery device of the present invention;

2 is an exploded perspective view of the embodiment, illustrating the assembly relationship of a liquid battery connection module and a battery box;

3 is an exploded perspective view of the embodiment, illustrating the assembly relationship of the cover mechanism of the liquid battery connection module, a circuit substrate and a plurality of bus connectors;

4 is an exploded perspective view of the embodiment, illustrating the assembly relationship of the circuit substrate and the plurality of bus connectors;

5 is an exploded perspective view of the embodiment, illustrating the assembly relationship of each sealing unit of the capping mechanism and the corresponding bus connector;

6 is a perspective cross-sectional view of the embodiment, illustrating the assembly relationship of the liquid battery connection module and the battery box;

Fig. 7 is a top view of this embodiment;

Fig. 8 is a sectional view taken along line VIII-VIII in Fig. 7;

Fig. 9 is the enlarged view of the partial area in Fig. 8;

10 is an exploded perspective view of the embodiment, illustrating the assembly relationship of the fixing column of the capping mechanism of the liquid battery connection module with the circuit substrate and the bus connector before hot-melting;

Fig. 11 is a bottom view after the combination of Fig. 10;

Figure 12 is a sectional view taken along line XII-XII in Figure 11; and

FIG. 13 is an enlarged view of a partial area in FIG. 12 .

Among them, the reference numerals are described as follows:

1 battery box

11 Cabinets

111 Partition Wall

112 compartments

113 Buckle

12 battery cells

121 battery electrodes

2 Liquid battery connection module

3 circuit board

31 Circuit traces

311 Pad

32 fixing holes

33 Second injection hole

4 Bus connectors

4' bus connector

41 Main body

42 Electrode connection part

421 Groove

43 Fixing holes

44 connected external

5 capping mechanism

51 Sealing unit

52 cover

521 Opening

522 base

523 Plug

524 Side Ribs

525 Buckle

526 card slot

527 Fixed column

528 The first injection hole

53 First seal

54 Second seal

6 screws

D1 first direction

D2 second direction

Detailed ways

Referring to FIG. 1 and FIG. 2 , an embodiment of the battery device of the present invention includes a battery box 1 and a liquid battery connection module 2 . The battery box 1 has a box body 11 and a plurality of battery cells 12 . The box 11 has a plurality of partition walls 111 spaced along a first direction D1 to define a plurality of compartments 112, and the plurality of battery units 12 are respectively disposed in the plurality of compartments 112, each A battery cell 12 includes battery fluid (not shown) and battery electrodes 121 (generally positive and negative electrodes).

Referring to FIGS. 3 to 6 , the liquid battery connection module 2 includes a circuit substrate 3 , a plurality of bus connectors 4 and a cover mechanism 5 . The circuit substrate 3 extends along the first direction D1 and is provided with circuit traces 31 . The circuit substrate 3 may be a printed circuit board, or the circuit traces 31 may be provided on an insulating board by known methods such as burying, etching and plating, and the circuit substrate 3 may be additionally provided with electronic components, sensors, fuses, Connectors and other components. In this embodiment, the circuit traces 31 include a plurality of bonding pads 311 disposed on the bottom surface of the circuit substrate 3 for connecting to the bus connector 4 .

The plurality of bus connectors 4 are disposed on the bottom surface of the circuit substrate 3 in two spaced rows and are electrically connected to the circuit traces 31 , and each row is arranged along the first direction D1 . Each bus connector 4 has a main body portion 41 connected to the circuit substrate 3 and at least two electrode connecting portions 42 protruding from the main body portion 41 . The plurality of electrode connecting parts 42 are respectively connected to the battery electrodes 121 in different compartments 112 , so as to connect the battery electrodes 121 in the plurality of compartments 112 in series. In this embodiment, each bus connector 4 has two electrode connecting parts 42, and the positions of the two rows of bus connectors 4 are displaced in a second direction D2 perpendicular to the first direction D1, so that each The positions of the two electrode connecting parts 42 of the bus connecting piece 4 in the second direction D2 respectively correspond to one adjacent electrode connecting part of each of the two adjacent bus connecting pieces 4 in the other row of bus connecting pieces 4 . 42 to connect the plurality of battery cells 12 in series. In a variant embodiment, each bus connector 4 may also have more than two electrode connecting portions 42 , so that some of the battery cells 12 are connected in parallel and some of the battery cells 12 are connected in series. In this embodiment, both ends of the plurality of bus connectors 4 arranged in a row are respectively provided with a bus connector 4 ′ with only one electrode connecting portion 42 , and each bus connector 4 ′ also has a main body The extension portion 41 is connected to the outer portion 44 for connecting wires (not shown). In this embodiment, each bus connector 4 is made of the same material, such as copper-based metal and aluminum-based metal. However, in a modified form of implementation, the electrode connecting parts 42 of the bus connector 4 can be made of different materials. For example, a bus connector 4 shown in FIG. 5 can be made of aluminum-based metal and copper-based metal on both sides of the imaginary line L respectively Made of metal. In addition, in this embodiment, the main body portions 41 of the plurality of bus connectors 4 are welded to the circuit traces 31 , and the electrode connecting portions 42 of each bus connector 4 are directed away from the main body portion 41 The bottom surface direction of the circuit board 3 protrudes in a bump shape. Each electrode connecting portion 42 has a groove 421 for connecting the corresponding battery electrode 121 . In other embodiments, the structure and shape of the electrode connecting portion 42 can be changed according to the structure and shape of the battery electrode 121 .

The capping mechanism 5 is disposed on the bottom surface of the circuit substrate 3 , and includes a plurality of sealing units 51 arranged along the first direction D1 , and the plurality of sealing units 51 correspond to the plurality of compartments 112 respectively. Each sealing unit 51 includes a cover 52 , two first sealing members 53 and a second sealing member 54 . The cover body 52 is made of insulating material, such as plastic material, preferably polyester material. The first sealing member 53 and the second sealing member 54 are made of a material capable of compression and elastic deformation, such as a rubber material. The cover body 52 extends along the second direction D2 and has two openings 521 arranged along the second direction D2. Referring to FIGS. 6 to 9 , the two openings 521 are respectively sleeved on two electrode connecting parts 42 respectively located in the two rows of bus connecting parts 4 corresponding to positions in the second direction D2 , the two first sealing parts 53 are respectively located at the two openings 521 and are interposed between the cover 52 and the corresponding electrode connecting portion 42 to liquid-tightly seal the gap between the cover 52 and the corresponding electrode connecting portion 42, and the second sealing The pieces 54 are located at the corresponding compartments 112 and are interposed between the cover body 52 and the case body 11 to liquid-tightly close the gap between the cover body 52 and the case body 11 .

Also referring to FIG. 5 , in this embodiment, the cover 52 of each sealing unit 51 also has a base 522 connected to the circuit substrate 3 and a base 522 protruding from the base 522 and the outer periphery of which is retracted inward than the outer periphery of the base 522 and the plurality of openings 521 penetrate through the base 522 and the plug 523 . Each first sealing member 53 of each sealing unit 51 is in the form of a gasket and is sleeved on the outer periphery of the corresponding electrode connecting portion 42 . The second sealing member 54 of each sealing unit 51 is in the form of a gasket and is sleeved on the outer circumference of the plug portion 523 . The plug portion 523 has two side protruding ribs 524 extending along the second direction D2 and located on opposite sides of each other and protruding toward the corresponding compartment 112 , and each side protruding rib 524 forms a side protruding rib 524 extending along the second direction D2 And adjacent to the button groove 525 of the base 522 . The top of each partition wall 111 is formed with two buckle edges 113 respectively protruding toward the adjacent partitions 112 to extend into the corresponding buckle grooves 525 and engage the corresponding side protruding ribs 524, thereby enabling the cover body 52 It is more firmly combined with the box body 11 . Furthermore, each side protruding rib 524 also forms a latching groove 526 spaced from the latching groove 525 and farther from the base 522 than the latching groove 525 and for the second sealing member 54 to be latched. When the casing 11 is closed, the plug portion 523 is inserted into the corresponding compartment 112 , and the protruding ribs 524 on both sides of the plug portion 523 are locked against the buckle edges 113 of the corresponding compartment wall 111 , and the second sealing The member 54 is located under the buckle edge 113, which can have a better sealing effect. The plurality of compartments 112 are sealed by the plurality of sealing units 51 to prevent leakage of battery fluid in the compartments 112 .

10 to FIG. 13 , the cover 52 of each sealing unit 51 further has a plurality of fixing posts 527 protruding from the base 522 , and the fixing posts 527 and the plug 523 are located at two opposite sides of the base 522 . On the side, corresponding to the position of the fixing post 527 , the circuit board 3 and the main body 41 of the plurality of bus connectors 4 respectively have corresponding fixing holes 32 and 43 for the corresponding fixing posts 527 to pass through and fix. , and strengthen the fixing among the circuit board 3 , the bus connector 4 and the cover 52 . FIGS. 10 to 13 show the states of the plurality of fixing posts 527 before heat fusion. In this embodiment, the plurality of fixing posts 527 are fixed and buckled in the corresponding fixing holes 32 by means of heat fusion. 9 , it is a state in which the fixing posts 527 are fixedly buckled in the corresponding fixing holes 32 after being hot-melted. It should be noted that, in this embodiment, the cover bodies 52 of the plurality of sealing units 51 are separated from each other and are independently provided on the circuit substrate 3, but in a modified embodiment, the plurality of sealing units 51 The cover bodies 52 can also be integrally formed and connected together, which is not limited to this embodiment. As shown in FIG. 10 , in this embodiment, each bus connector 4 has two fixing holes 43 , and each cover 52 has two fixing posts 527 which are respectively disposed at diagonally opposite corners, that is, each cover has two fixing holes 43 . The two fixing posts 527 of the body 52 respectively pass through the fixing holes 43 of the two bus connectors 4 . A fixed post 527 is inserted therethrough.

Referring to FIGS. 1 to 3 again, the cover body 52 of each sealing unit 51 forms a first liquid injection hole 528 that can communicate with the corresponding compartment 112 , and the circuit substrate 3 forms a plurality of holes corresponding to the plurality of sealing units 51 respectively. The second liquid injection hole 33 of the first liquid injection hole 528 is connected with the first liquid injection hole 528 and the second liquid injection hole 33 of each compartment 112 to inject battery liquid (usually electrolyte), and the battery liquid is injected into the second liquid injection hole 33. Then, the first liquid injection hole 528 and the second liquid injection hole 33 are sealed with plugs (not shown) or other methods.

The liquid battery connection module 2 can be pre-assembled and then assembled with the battery box 1 . When assembling the liquid battery connection module 2 and the battery box 1, just cover the liquid battery connection module 2 corresponding to the battery box 1, and then lock the screws 6 at the four corners to fix the liquid battery connection module 2 and the battery box 1. . After the liquid battery connection module 2 is combined with the battery box 1 , the first liquid injection hole 528 and the second liquid injection hole 33 are used to inject the battery liquid, and finally the first liquid injection hole 528 and the second liquid injection hole 33 are sealed. In this way, the assembly procedure of the liquid battery connection module 2 and the battery box 1 is simple and easy to operate.

To sum up, the liquid battery connection module 2 can be pre-assembled in a modular manner, and integrate the bus connectors 4 , 4 ′ and the capping mechanism 5 on the circuit substrate 3 , which makes the assembly procedure with the battery box 1 easier It is easy to operate, can reliably seal the battery fluid, and can electrically connect the plurality of battery electrodes 121 in the battery case 1 .

However, the above descriptions are merely examples of the present invention, which should not limit the scope of the present invention. Any simple equivalent changes and modifications made according to the scope of the present invention and the content of the patent specification are still within the scope of the present invention. within the scope of the invention claims.

Claims (21)

1. A liquid battery connection module, comprising:

a circuit substrate extending along a first direction and provided with circuit traces;

a plurality of bus connectors arranged on the bottom surface of the circuit substrate in two spaced rows and electrically connected with the circuit traces, wherein each row is arranged along the first direction, and each bus connector is provided with a main body part connected with the circuit substrate and at least two electrode connecting parts; and

a cover sealing mechanism arranged on the bottom surface of the circuit substrate and comprising a plurality of sealing units arranged along the first direction, wherein each sealing unit comprises a cover body, two first sealing pieces and a second sealing piece, the cover body extends along a second direction perpendicular to the first direction and is provided with two openings arranged along the second direction, the two openings are respectively sleeved on two electrode connecting parts which are respectively positioned in the two rows of confluence connecting pieces and correspond to each other in the second direction, the two first sealing pieces are respectively positioned at the two openings and are positioned between the cover body and the corresponding electrode connecting parts so as to seal gaps between the cover body and the corresponding electrode connecting parts in a liquid-tight manner, and the second sealing piece is arranged on the periphery of the cover body.

2. The liquid battery connection module according to claim 1, wherein the electrode connection portion of each bus bar connection member protrudes from the main body portion in a direction away from the bottom surface of the circuit substrate and is shaped like a projection.

3. The liquid battery connection module according to claim 2, wherein each of the first sealing members of each of the sealing units is in the form of a gasket and is fitted around the outer circumference of the corresponding electrode connection part.

4. The liquid battery connection module according to claim 1, wherein the cover of each sealing unit further has a base portion connected to the circuit substrate and a plug portion protruding from the base portion and having an outer circumference that is recessed inward from an outer circumference of the base portion, and the plurality of openings penetrate the base portion and the plug portion.

5. The liquid battery connection module according to claim 4, wherein the second sealing member of each sealing unit is in the form of a gasket and is fitted around the outer circumference of the plug portion.

6. The liquid battery connecting module according to claim 1, wherein the cover of each sealing unit further has a plurality of fixing posts, and the circuit board and the plurality of bus bar connectors each have a corresponding fixing hole for the corresponding fixing post to pass through and fix.

7. The liquid battery connecting module according to claim 6, wherein each of the junction connectors has two fixing holes, two fixing posts of the cover of each of the sealing units are respectively located at two diagonally opposite corners of the cover to respectively penetrate through the fixing holes of each of the junction connectors in two rows, and two fixing holes of each of the junction connectors are respectively penetrated through by one of the fixing posts of two adjacent covers.

8. The liquid battery connection module according to claim 6, wherein the fixing posts are heat-fused to be fixedly snap-fitted into the corresponding fixing holes.

9. The liquid battery connection module according to any one of claims 1 to 8, wherein the covers of the plurality of sealing units are separated from each other and are provided independently of each other on the circuit substrate.

10. A battery device, comprising:

the battery box is provided with a box body and a plurality of battery units, the box body is provided with a plurality of partition walls which are arranged at intervals along a first direction so as to define a plurality of partitions, the battery units are respectively arranged in the partitions, and each battery unit comprises battery liquid and a battery electrode; and

a liquid battery connection module comprising:

a circuit substrate extending along the first direction and provided with circuit traces,

a plurality of bus connectors arranged in two spaced rows on the bottom surface of the circuit substrate and electrically connected with the circuit trace, each row arranged along the first direction, each bus connector having a main body connected with the circuit substrate and at least two electrode connecting portions, the electrode connecting portions being respectively connected with the battery electrodes in different compartments to serially connect the battery electrodes in the compartments, an

A cover mechanism arranged on the bottom surface of the circuit substrate and including multiple sealing units arranged along the first direction, the sealing units respectively correspond to the compartments, each sealing unit comprises a cover body, two first sealing pieces and a second sealing piece, the cover body extends along a second direction vertical to the first direction and is provided with two open holes arranged along the second direction, the two openings are respectively sleeved on two electrode connecting parts which are respectively positioned in the two rows of bus connecting pieces and correspond to each other in the second direction, the two first sealing elements are respectively positioned at the two openings and between the cover body and the corresponding electrode connecting parts so as to liquid-tightly seal the gap between the cover body and the corresponding electrode connecting parts, the second sealing member is located at the corresponding compartment and between the cover and the box body to liquid-tightly close a gap between the cover and the box body.

11. The battery device according to claim 10, wherein the electrode connecting portion of each bus bar connector protrudes from the main body portion in a direction away from the bottom surface of the circuit substrate and is in a convex shape.

12. The battery device according to claim 11, wherein each of the first sealing members of each of the sealing units is in the form of a gasket and is fitted around the outer circumference of the corresponding electrode connection part.

13. The battery device according to claim 10, wherein the cover of each sealing unit further has a base portion connected to the circuit substrate and a plug portion protruding from the base portion and having an outer circumference that is recessed inward from an outer circumference of the base portion, and the plurality of openings penetrate the base portion and the plug portion.

14. The battery device according to claim 13, wherein the second sealing member of each sealing unit is in the form of a gasket and is fitted around the outer circumference of the plug portion.

15. The battery device of claim 14, wherein the plug has two side ribs extending along the second direction and located at opposite sides of each other and protruding toward the corresponding compartment, and each side rib forms a groove extending along the second direction and adjacent to the base, and the top of each compartment wall forms two buckling edges protruding toward the adjacent compartment to protrude into the corresponding groove and allow the corresponding side rib to abut against.

16. The battery device of claim 15, wherein each side rib further defines a slot spaced from the groove and further away from the base than the groove for receiving the second sealing member.

17. The battery device according to claim 10, wherein the cover of each sealing unit further has a plurality of fixing posts, and the circuit board and the plurality of bus bar connectors each have corresponding fixing holes for the corresponding fixing posts to penetrate and fix.

18. The battery device according to claim 17, wherein each of the junction connectors has two fixing holes, two fixing posts of the cover of each of the sealing units are respectively located at two diagonally opposite corners of the cover to respectively penetrate through the fixing holes of a respective junction connector in two rows, and two fixing holes of each junction connector are respectively penetrated through by a respective fixing post of two adjacent covers.

19. The battery device according to claim 17, wherein the fixing posts are heat-fused to be fixedly snap-fitted into the corresponding fixing holes.

20. The battery device according to claim 10, wherein the lid body of each of the sealing units is formed with a first electrolyte-injecting hole communicating with the corresponding compartment, and the circuit substrate is formed with a plurality of second electrolyte-injecting holes respectively corresponding to the first electrolyte-injecting holes of the plurality of sealing units.

21. The battery device according to any one of claims 10 to 20, wherein the covers of the plurality of sealing units are separated from each other and are provided independently of each other on the circuit substrate.

Images